package com.zuoye;

public class Demo1 {
    public static void main(String[] args) {
        double yj = 7988;//原价
        if (yj*0.8<yj-1500){//对比打折和二手市场
            System.out.println("以旧换新");
        }else {
            System.out.println("二手市场");
        }
    }
}
